Type-writing machine.



F. QUESBRUCK. TYPE WRITING MACHINE.

APPLIUATION FILED Nov. 15, mo.

. Patented. June 10, 1913.

nisirnn s raws FRANK c. URsBnucK, or NEW irons, N, Y., emission TO UNnERwoon TYPEWRITER COMPANY, on NEW YORK, N. 3.,

A. GGRPQRATION OF DELAWARE.

TYPE-WRITING Macaw-E.

ieeae za.

To all whom it may concern;

Be it known that I, FRANK C. URSBRUGK, a citizen of the United States, residing in New York, in the county of New York and State of New York, have invented certain new and useful Improvements in TypelVriting Machines, of which the following is a specification.

This invention relates to center guides for .30 type bars, such guides being usually fixed upon the framework of the machine at the eyioinity of the printing point, and a machine usually having a single center guide, although. in some cases more are provided. The invention is shown as applied to an Underwood front strike writing machine, which is usually constructed with a-fixed guide-fork for the type bars, said guide fork arranged just below the printing point, and constructed to receive guide bits or pro jections which are formed on the type bars just below the typev heads. By means of this ferkedguide, lateral play of the types is prevented.

in order to prevent vertical play of the types, or to insure that the types shall regis- 'ter vertically as well as horizontally, I provide an auxiliary" guide, which may be located between the forks of the usual fixed guide, and preferably engages said projections on the type bars. One of the 006per'ating type-bar guiding members is recessed, and the other has a projection which fits in the recess, to secure accuracy of vertical alinement. v

One of the principal features of the invention consists inmounting such an auxiliary guide so that it will yield, and hence not prevent the types from striking the platen or the paper thereon, nor cause the types'to stick to the. guide. A V-notch is formed preferably on the type bar, and the yielding guide has a projection of corresponding form. These parts fit or. wedge together as the type approaches the platen;

this action of the auxiliary guide being sufiicient in practice to assureaccuracyof vertical alinement.

While the invention shows .iixed guides for sidewise alinemcnt, and a yielding guide for vertical alinement, still it will'be under: stood that the yielding feature is applicable to other than vertical guides for the types; and it will also "be understood that the yieldingguide may be employed whether or specification of Letters Patent. Application filed November 16, 1910.

a Fatentedune 10, 1913. Serial No. 592,615.

not in connection with a fixed guide or guides.

Other objects and advantages will hereinafter appear.

In the accompanying drawings, Figure l is a perspective, partly broken away, show ing the invention applied to an Underwood writing machine. Fig. 2. is a side view, showing a type bar engaging the center guide. Fig. 3 shows the centering notch fitting the guide at the moment when the type. strikes the platen. Fig. 4 is a side view, of the invention, this view showing an Underwood writing machine in central vertical section. Fig. 5 is a detail front view of thetype guide. v Types 1. are mounted on the heads 2 of type bars 3 fulcrumed on a rod t-in. radial slots 6 of a segment 5 fast to the framework 7 of the machine. Depression of-a key 8 causes a lever 9 to rock an .elbow lever 10, the latter connected to one .end 11 of the type bar 8 to swing the latter upwardly and rearwardly a.gainst a platen 12. Saidplaten is fixed to an axle 1.3, mounted in carriage -=-8 0f 14 which travelson the front and rear rails 15, 16. As the free end of the type bar .3 approaches the platen, its upper portion enters between converging fixed guide fingers. or forks 1.7' projecting forwardly from arms-x8 18 of a type bar guide mounted on the frame I 7, said fingers preventing lateral shake of the type bars. Each of the type bars has a guide-bit or tongue 19, fitting between 'the forks 17, and provided with a tapering centering notch 20. As the bit enters between the forks 17, said notch becomes a seat for a pointed projection or gage 21, mounted H on a stem 22, which is placed between the arms 18, of the usual type guide, in llnii'with and slightly below the printing point, One or both .of the diverging walls of the notch 20. engages the projecting point 23 of the gage; and .as the-type bar continues to press, toward the platen, it is .causedt shift bodily upwardly ordowlrwardly, relatively to its fulcrumv 4, (depending upon whether the-lower or the upper wall of the notch strikes the gage) until the notch is centered relatively t and fits ever the point of the gage (Fig. 3) at which time, the type is in direct alinement with the printing line, and is held against vertical displacement.

The stem 22 is preferably pivoted to en- I able it to yield. For this purposes-it is ins ' mounted on any suitable support, as for intween the arms 18, the gage being held the gage.

stance on the usual connecting screw 24fbe- .orward of the platen by a spring 25. This spring 20, although weak, is sufficient to hold the gage stationary or nearly so while the notch of the type bar is fitting itself to The bar then rocks the gage idly back until the type strikes the platen through a ribbon 26, the type being guided bysaidgage as it recedes. Each type will be guided by the gage to the same horizontal printing line on the sheet because the centeringnotches 20 are each located the same distance from the centers of said type characters. Upon releasing the key 8, the type bar 3 returns to its idle position, (Fig. 4,) it being assisted thereto by the spring 25, which returns the gage 21 to normal position (Figs. 1- and 4). I

The yielding action of the type guide enables it to come to a fit with the type bar without preventing the type from printing, and without causing the type bar to stick to the'guide. The invention is especially of value where the type bars are liable to wear and becomeloose upon their pivots; and it is also of value for the side type bars of the machine, which are liable to spring or shake up and down unless a center guide is provided to prevent it. v

The point of my gage is approximately a right angle, so that it is impossible for it to lock with any type bar, and also it will brin the type to proper alinement, even though the type tends to swing far out of line. The gage normally lies within the fixed guide fingers, so that it will not interfere with placing any thickness of work in the machine.- and since it swings, it will also just as effectively aline, and permit printing on the thinnest sheets.

It will be understood-that the invention is of value whether used with or Without fixed center guides, and also usable for guiding the bars otherwise than vertically when required.

Having thus described my invention, I claim:

1. In a typewriting machine, the combination with a platen, and type'bars having types, of a yielding centerin guide and fixed side guide fingers, engage. by the bars as the types approach the platen, to aline said types.

2.- In a typewriting machine, the combination witha platen and type bars having" types, of a gage in the path of the type bars to aline the types, said gage being movable to accommodate different thicknesses of flop-tea of this patent may be obtained for work sheets, fixed side guide fingers, and

means to hold the gage normally advanced from the platen.

3. In a typewriting machine, the combination with a platen, and type bars having types, of a spring-returned centering giiide engaged by the bars as the types approach the'platen, and fixed side guide fingers, to

aline the types with the printing line and to steady the type bars at the time of impact against the p aten.

4. In a typewriting machine, the combina- I tion with a platen, type bars hav ng types and a type bar guide, of a centering guide pivoted between the arms of the type bar guide, a spring to hold the centering guide advanced from the platen, said type bars each having a centering notch to fit over the centering guide, asits type approaches the platen to direct the types to theprlntrg 5. In a typewriting machine, the combination. with a platen, of type bars having centering notches extending across said bars, types on the bars, yielding centering guide in the path of the type bars, comprising a tapering gage over which the notches fit to shift the type bars bodily relatively to their fulcrums, and direct the types to the printing line.

6. In a typewriting machine, the combination with a platen, of type bars, a centering gage lying in the path of the bars, said bars each having a centering notch to fit over the gage, which notch is cut across the width itself from the gage.

7. In a typewriting machine, the combina- I tion with a platen, of type bars, a yielding centering gage lying in the path of the type bars, said bars each having a centering fixed side guide fingers, a-

of the bar, to enable the bar to readily free notch to fit over the gage, which notch is cut across the width of the bar, to enable I the bar to readily free itself from the gage,

and means to return the gage to normal pos'ition after the impact of the types against the platen.

8. In a typewriting machine, the combination with a platen and atype bar having a type to strike the platen, of a fixed guide finger, a gage pivoted on said finger, a spring holding said gage. away from the platen, and a part onthe type bar cooperating with said gage to ahne thetypeas it moves toward the platen.

FRANK C. URSBRUCK.

" Witnesses:

K. FRANKFURT, C. RIPLEl f.

five cents each, by addressing the Gommissicner o1 .Eatentw, Washington, D. O. 

